1、STD-BSI BS EN IS0 584-ENGL 1778 Lb2LfbbS Ob72875 85T BRITISH STANDARD Plastics - Unsaturated polyester resins - Determination of reactivity at 80 “C (conventional method) The European Standard EN IS0 584 : 1997 has the status of a British Standard ICs 83.080.10 NO COPYING WITHOUT BSI PERMISSION EXCE
2、PT AS PERMITTED BY COPYRIGm LAW BS EN IS0 584 : 1998 STD-BSI BS EN IS0 58V-ENGL 1998 m 1b24bb7 Ob7287b 79b D BS EN IS0 584 : 1998 This British standard, hawig been prepared under the direction of the Sector Board for Materias and Chemicals, was pubiished under the authon of the Standards Board and c
3、omes into effect on 16 January 1998 National foreword This British Standard is the English language version of EN IS0 584 : 1997. It is identical with IS0 584 : 1982. The UK participation in its prepamtion was entrusted to Technical Committee PW42, Fibre reinforced thermosetting plastics and prepegs
4、, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible intematio - monitor related intedonal and European developments and promulgate them in the UK. A iist of organizationS represented on this committee can be obtained on request to its semtary. Cros
5、s-references Attention is drawn to the fact that CEN and CENELEC Standards normally inciude an annex which lists nomative references to intedonal publications with their corresponding European publications. The British standards which implement these in-onal or European publications may be found in
6、the BSI Standards Catalogue under the section entitled Intedonal Standards Correspondence Index, or by using the Fnd facility of the BSI Stan- Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises
7、a front cover, an inside hnt cover, the EN is0 titie page, the EN IS0 foreword page, the Is0 titie page, the IS0 foreword page, pages 1 to 3, a blank page, an inside back cover and a back cover. Amendments issued since publication ISBN O S 28897 8 STD-BSI BS EN IS0 584-ENGL 1778 m 1624bb7 b72877 b22
8、 = EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 584 November 1997 ICs 83.080.10 Descriptors: see IS0 document English version Plastics - Unsaturated polyester resins - Determination of reactivity at 80 OC (conventional method) (IS0 584:1982) Plastiques - Rsines de poiyesters non satur qu
9、antity and spatial parameters Of the test catalyst system (m/xtures of catalysts, combinations of catalysts and b) speed of heating the test portion placed in a accelerators). temperature controlled bath. For example, the replacement of water in the bath by another fluid with a lower heat capacity (
10、glycol, oil, etc.) leads to slower heating; 2 Principle c) type of temperature measuring dement Placed in the test portion and its ability to respond to rapid changes in temperature. Thermometers with a slow response and thermocouples with large junctions between the resistance leads are unsatisfact
11、ow; time. Placing of a mixture of 100 parts of resin with 1 part of catalyst in a test-tube of defined size. Heating of the test-tube and its contents in a water-bath at 80 OC for the duration of the reaction, and noting (or recording) the rise in temperature with dl accurate centring of the thermoc
12、ouple in the test portion, both in height and in line with the axis. 3 Reagent During the analysis, use only reagents of recognized analytical grade. These conditions which are mandatory are specified in the text of this International Standard. Benzoyl peroxide, catalyst. 1 This International Standa
13、rd specifies a method for the deter- mination of the reactivity of unsaturated polyester resins as characterized by the maximum temperature reached by a soh- tion of unsaturated polyester resin and catalyst when heated in a water-bath at 80 OC, by the time taken for the temperature of Scope and fiel
14、d of application WARNING - Attention is drawn to the dangers involved in handling pure benzoyl peroxide. A mixture of 50 % (rnlrn) of benzoyl peroxide catalyst in dibutyl phthalate having an active oxygen content between 3,26 and 3.33 % (rn/rn), as measured by known analytical methods. 1 STD-BSI BS
15、EN IS0 589-ENGL 2978 m Lb2qbbS b72882 T9T W EN IS0 684 : 1997 4 Apparatus 4.1 with a thermostat and a circulation pump or stirrer. Water-bath.1) maintained at 80 f 0,5 OC and provided 4.2 Test-tube, of borosilicate glass or any other glass giving the same results, of internal diameter 18 f 1 mm, len
16、gth 210 f 5 mm and wall thickness 1 i 0,2 mm. 4.3 Iron-constantan thermocouple, consisting of wires of 1 f 0,05mm thickness, with a welded junction of 2mm diameter maximum and a meter for measuring temperatures up to 250 OC, graduated in divisions of 2 OC. NOTE - It is desirable to use screened ther
17、mocouples that can be positioned centrally. 4.4 If available a recorder, permitting the readings of temperature on the graph paper to the nearest 1 OC and the time to the nearest 15 8. 4.5 Device, for locating the thermocouple centrally in the test-tube (see the figure). 4.6 Balance, accurate to 0,O
18、l g. 4.7 Stop watch. 5 Procedure 6.1 Weigh 2 i 0.01 g of the benzoyl peroxide-dibutyl phthalate mixture (ciause3) into a glass beaker of capacity 250 ml and add 100 i 1 g of resin at a temperature between 15 and 30 OC. Continue stirring for 2 to 3 min. 6.2 Then immedietely pour part of the mixture i
19、nto the test- tube (4.21 to a height of 7 to 8 cm. Introduce the thermocouple into the mixture in a position on the axis of the tube and equidistant from the bottom and the surface of the mixture (see the figure). Then piace the tube in the wter-bath at 80 i 0,5 OC, so that the surface of the resin
20、is weil beneath the level of the surface of the water. 5.3 If a recorder is used, start and allow the recorder to run during the complete reaction. Alternatively, note the maximum temperature reached, as well as the time taken for the temperature of the mixture, determined by the thermocouple, to ri
21、se from 65 OC to the maximum temperature, and in the case where this temperature is greater than 90 OC, the time to rise from 65 to 90 OC. 5.4 Repeat the test, beginning at 5.1, until two consecutive determinations do not differ by more than 5 OC in temperature and 10 % in time. 6 Test report The te
22、st report shall include the following information : a) a reference to this International Standard; bl a complete identification of the resin tested; c) the type of thermocouple used and whether screened or unscreened; d) the individual values of the maximum temperature reached in the two tests and t
23、he average value; e) the individual values of the time taken for the tempera- ture to rise from 65 OC to the maximum temperature in the two tests and the average value; f) if the maximum temperature is above 90 OC, the in- dividual values of the time taken for the temperature to rise from 65 to 90 O
24、C in the two tests and the average value; g) if a recorder is used, the graphs giving the temperature plotted against time. h) any deviations from the standard test conditions speci- fied in this International Standard, for example type and temperature of the heating medium, catalyst system used, th
25、ermocouple system used, etc. (see note 2 to clause i). II The water in the bath may be replaced by another fluid agreed upon by the interested parties. 2 STD.BSI BS EN IS0 5Li-ENGL 1998 lb24bb9 b72883 92b EN IS0 584 : 1997 I I l- L. A- + / I I I II 3 17 ! 22 Section A-A Dimensions in millimetres Ope
26、ning for thermocouple 1A Figure - Example of device for locating the thermocouple centrally in the test-tube 1) The leveis for the test mixture and the thermocouple shall be in accordance with the instructions in 5.2. 3 BS EN IS0 584 : 1998 BSI 389 Chiswick High Road London w4 4AL 3SI - British Stan
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